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Which kind of Pet does this apply to? What about Shaman Totems?

As a BM hunter, does anyone know if this racial also applies to Stampede and Dire Beast?

According to the Blizzard information on the racial, "Orcs work well with combat pets, which receive a bonus to damage output under their care." Then key then is "combat pets" which should include elemental summons for Shaman and, contrary to popular belief, the Frost Mage, as these pets can receive combat instruction from the player.

The ability will probably not work for summons outside the player's control - such as Hunter's dire beast, Engineering summons, trinkets, or other guardian spawns.